Siloxa-Tek 8505 - 1 Gallon Makes 5 Gallons (Concentrated)

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  • Regular price $510.55
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An industrial-grade, water-based, silane/siloxane concrete sealer engineered to reduce water and moisture intrusion, protect concrete from deicing salts and resist staining from oil and grease.

  • COVERAGE: 675-825 square feet

  • COATS: 2

  • VOC CONTENT: 90 g/L

  • FINISH: Natural

  • CONCENTRATED: Concentrated

  • WARRANTY: 100 Year Warranty


Siloxa-Tek 8505 is a deep penetrating, high performing and long lasting water-based concrete sealer. It is able to resist water instrusion, deicing salts, chlorides, freeze-thaw cycles and staining from oils and greases. This proprietary {silane/siloxane} concrete sealer contains a proprietary stain repellent additive that makes cleaning up stains easier and dries completely clear with a natural finish that will not change the look or appearance of the susbtrate. It is an excellent choice to seal concrete driveways, garages, shop floors and patios. A great water-based alternative to the Siloxa-Tek 8510.


Exceptional when used for:

  • Applications: Driveways/sidewalks, patios, pool decks, garages, chimneys, roof tiles
  • Substrates: Concrete, concrete blocks/cinderblocks, brick, pavers, exposed aggregate, stucco, stone, slate, sandstone
  • For enhanced performance on horizontal concrete surfaces use a densifying primer, wait 7 days and then apply the Siloxa-Tek 8505.


  • What it is: Penetrating, water-based, water, salt and oil resistant concrete sealer
  • What it's for: Concrete floors, concrete driveways, garages, shop floors and patios, brick, stone & masonry
  • What it does: Waterproofs and seals concrete & masonry, resists deicing salts and makes oil and grease clean up easier
  • What it's made of: Water-carried silanes, siloxanes, proprietary stain repellent additives
  • What's the finish/color: Clear, flat, natural
  • How do you apply it?: Sprayer, roller or brush
  • What's so special about it: Available in a concentrated or ready to use formulation this cost-effective product resists deicing salts and makes stains easier to clean while waterproofing concrete
  • What else is like it?: Siloxa-Tek 8500: Resists deicing salts and water but will not resist staining. Siloxa-Tek 8510: Solvent-carried and higher performing version of the 8505